EP0420486B1 - Dilatationskatheter mit geringem Durchmesser, ausgestattet mit einem drahtverstärkten, koaxialen, schlauchförmigen Körper - Google Patents
Dilatationskatheter mit geringem Durchmesser, ausgestattet mit einem drahtverstärkten, koaxialen, schlauchförmigen Körper Download PDFInfo
- Publication number
- EP0420486B1 EP0420486B1 EP90310238A EP90310238A EP0420486B1 EP 0420486 B1 EP0420486 B1 EP 0420486B1 EP 90310238 A EP90310238 A EP 90310238A EP 90310238 A EP90310238 A EP 90310238A EP 0420486 B1 EP0420486 B1 EP 0420486B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular member
- distal end
- catheter
- inch
- proximal end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000004642 Polyimide Substances 0.000 claims abstract description 7
- 229920001721 polyimide Polymers 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 229920002457 flexible plastic Polymers 0.000 claims 2
- 238000007887 coronary angioplasty Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- KKJUPNGICOCCDW-UHFFFAOYSA-N 7-N,N-Dimethylamino-1,2,3,4,5-pentathiocyclooctane Chemical compound CN(C)C1CSSSSSC1 KKJUPNGICOCCDW-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000002792 vascular Effects 0.000 description 6
- FDSYTWVNUJTPMA-UHFFFAOYSA-N 2-[3,9-bis(carboxymethyl)-3,6,9,15-tetrazabicyclo[9.3.1]pentadeca-1(15),11,13-trien-6-yl]acetic acid Chemical compound C1N(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC2=CC=CC1=N2 FDSYTWVNUJTPMA-UHFFFAOYSA-N 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/104—Balloon catheters used for angioplasty
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0004—Catheters; Hollow probes having two or more concentrically arranged tubes for forming a concentric catheter system
Definitions
- This invention relates generally to dilatation catheters for use in carrying out percutaneous transluminal coronary angioplasty (PTCA) procedures and more specifically to such a catheter which is designed to have a catheter body of very low diameter while still possessing the requisite firmness allowing it to be advanced through the vascular system without kinking or accordion pleating.
- PTCA percutaneous transluminal coronary angioplasty
- the PTCA procedure for restoring patency to occluded or partially occluded coronary arteries is generally attributed to A. Gruntzig.
- the procedure involves inserting an elongated tubular catheter having a balloon or expander member on its distal end into the vascular system and then advancing the catheter until the balloon spans or bridges the stenosis to be treated. Then, an inflation fluid is injected through the distal end of the catheter and made to perfuse along the length thereof to inflate the expander member to a predetermined size and pressure.
- the catheter shaft requires two lumens.
- the two lumens may be created by extruding or otherwise forming a double lumen tube or, alternatively, by providing two concentrically disposed tubes where the lumen of the centermost tube accommodates the guide wire and the passage between the O.D. of the inner tube and the I.D. of the outer tube allows for the perfusion of inflation fluid to the balloon.
- the catheter of WO-A-8 806 465 which is regarded to be the closest prior art, is of greater diameter (inner tube 0.4-2.5mm, see page 13 last line) and the reinforcing member 13 shown in Fig. 14 is wound around the inner tube to prevent flexion of the catheter and improve torque transmission.
- Such an arrangement is not suitable for the very thin-walled catheters of this invention and is far less effective in preventing the concertina effect as the wound or meshed wire can contract in the manner of a coil spring.
- the wall thickness of the tubes becomes a critical factor. If made overly thin, the resulting catheter lacks sufficient longitudinal rigidity and tends to fold upon itself when an effort is made to push the PTCA catheter through its guide catheter. Thus, a practical limit exists on the minimum wall thickness while still permitting the necessary "pushability" characteristic necessary for advancing the catheter through the vascular system.
- Another object of the invention is to provide a small diameter, thin-wall PTCA balloon catheter which exhibits sufficient longitudinal rigidity to allow it is be passed through the vascular system without kinking or pleating.
- a further object of the invention is to provide a balloon catheter for use in PTCA procedures of the type including two coaxially disposed tubes of thin wall dimension, yet appropriately reinforced against accordion pleating when the catheter assembly is pushed through a guide catheter and into a blood vessel to be treated.
- first and second elongated flexible tubular members each of minimal wall thickness, the tubular members preferably being formed from a suitable polymer such as polyamide, polyester or polyimide with a polyimide plastic being preferred, and incorporating a reinforcing structure within the walls of one or both tubes.
- the tubes are coaxially disposed relative to one another with the smaller diameter tube having its distal end projecting beyond the distal end of the larger diameter tube.
- the inflatable expander member is circumferentially bonded at its proximal end about the distal end portion of the larger diameter tube and its distal end is circumferentially bonded to the distal end portion of the smaller diameter, concentrically disposed tube.
- a molded plastic hub is affixed to the proximal ends of the two tubes and includes an inflation port in fluid communication with the annular space existing between the O.D. of the small diameter tube and the I.D. of the larger diameter tube. Inflation fluid injected through the inflation port then perfuses through this space to fill and inflate the expander member to a desired pressure.
- the lumen of the inner tube can accommodate a guide wire.
- the reinforcing structure may comprise a single strand of wire extending substantially the entire length of the catheter and embedded within the wall of the larger diameter tube, the smaller diameter tube, or both.
- plural strands of wire are incorporated in the wall of the tubes, running parallel to one another.
- the catheter constructed in accordance with the present invention is indicated generally by numeral 10.
- the catheter includes an outer tubular body member 12 having a proximal end 14 and a distal end 16 with a lumen 18 extending from the proximal end to the distal end.
- an inner tubular member 20 Coaxially disposed within the lumen 18 of the outer tubular member 12 is an inner tubular member 20 having a proximal end 22 and a distal end 24 with a lumen 26 extending the full length thereof.
- a molded plastic hub 24 which is commonly referred to as a Y-connector.
- the connector includes a Luer fitting 26 at the end of a longitudinal bore passing through the arm 28 and in fluid communication with the annular space existing between the O.D. of the inner tube 20 and the I.D. of the outer tube 12.
- the expander member 30 is also tubular in form and includes a proximal end 32 which is appropriately circumferentially bonded to the exterior wall surface of the outer tubular member 12.
- the distal end 34 of the expander member 30 is likewise appropriately bonded to the exterior wall surface of the inner tubular member 20 which extends outwardly beyond the distal end 16 of the outer tubular member. It can be seen, then, that when an inflation fluid is injected under pressure through the port 26, it will perfuse through the annular space between the two tubular members and will exit the distal end of the outer tubular member 12 into the interior of the inflatable expander member 30.
- the expander member 30 may comprise a tubular film of polyethylene terephthalate (PET) which is biaxially oriented in a drawing and blow molding process so as to exhibit a very high burst strength well in excess of 7,03 kg/cm2 (100 PSI) and which does not appreciably expand radially beyond a predetermined maximum diameter even with substantially increased pressures.
- PET polyethylene terephthalate
- a guide wire 36 which passes through a bore 38 formed in the hub 24 and through the lumen 26 of the inner tube 20 so as to exit the distal end 24 thereof.
- Guide wires are commonly used in PTCA procedures for facilitating the steering of the catheter 10 through the vascular system to a location where the expander member 30 is disposed adjacent a stenotic lesion to be treated.
- a reinforcing member 40 which, in Figure 1, comprises a fine strand of wire, preferably stainless steel.
- the wall 42 of the inner tube 20 also is seen to include a stiffening wire 44.
- a workable PTCA catheter system may result when a reinforcing strand is incorporated in only one of the two concentric tubes.
- the diameter of the reinforcing strand is 0.025 mm (0.001 inch) to 0.05 mm (0.002 inch).
- a solid cylindrical mandrel approximately five feet long may first be coated with multiple think layers of plastic. While various plastics including polyesters, polyamides and polyimides may be employed, it has been found that polyimide is preferred because of its characteristics of tensile strength and flexibility.
- the reinforcing wire(s) 40 or 44 may be positioned on the coating covering the mandrel and then that assembly is repeatedly dipped, sprayed or otherwise coated with additional layers of the same plastic whereby the wire reinforcing strand becomes totally embedded within the tube's wall.
- Figure 2 illustrates how a plurality of strands 40a and 40b can be embedded in the wall of the outer tubular member 12 and, likewise, how plural reinforcing strands 44a and 44b can be embedded in the wall of the inner tubular member 20.
- the strands are shown as being encased in ribs projecting from the exterior walls of the tubes.
- the wire reinforcing members 40 and 44 are wholly contained within the walls of the tubes 12 and 20.
- FIG. 4 shows a further alternative arrangement.
- the inner tubular member 20 is seen to include a single reinforcing strand 44 while the outer tubular member 12 incorporates a plurality of wire strands in the form of a loosely woven braid 46.
- a coaxial PTCA catheter whose outer tube 12 may have an O.D. as small as 0.75 mm (0.030 inch) with a wall thickness of about 0.025 mm (.001 inch) leaving a lumen of about 0.71 mm (.028 inch) in diameter.
- a lumen of this size can accommodate an inner tube 20 having a O.D. in the range of from 0.47 mm (.0185 inch) to 0.53 mm (.021 inch) and a corresponding I.D. of from 0.43 mm (.017 inch) to 0.475 mm (.0187 inch).
- the lumen of the inner tube can then accommodate a guide wire 36 whose O.D. may be typically 0.35 mm (.014 inch).
- each of the concentric tubes is in the range of from 0.025 to 0.15 mm (.001 to .006 inch).
- the O.D. of the outer tube 12 may then be in the range of from 0.66 to 1.47 mm (.026 to .058 inch) and that of the inner tube 20 may in the range of from 0.45 to 0.94 mm (.0177 to .037 inch).
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Child & Adolescent Psychology (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Steroid Compounds (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Reinforcement Elements For Buildings (AREA)
Claims (5)
- Ballonkatheter, umfassend:(a) ein erstes langgestrecktes, flexibles Rohrglied aus Kunststoff (12) mit einem proximalen Ende (14), einem ein Lumen (18) umschreibenden distalen Ende (16) und einer Längsachse, die sich vom proximalen Ende (14) zum distalen Ende (16) erstreckt:(b) ein zweites langgestrecktes, flexibles Rohrglied aus Kunststoff (20) mit einem proximalen Ende (22), einem ein Lumen (26) umschreibenden distalen Ende und einer sich von dem proximalen Ende (22) zum distalen Ende erstreckenden Längsachse, wobei das zweite Rohrglied (20) in dem Lumen (18) des ersten Rohrgliedes (12) angeordnet ist und ein distaler Endteil des zweiten Rohrgliedes (20) über das distale Ende (16) des ersten Rohrgliedes (12) vorsteht;(c) ein aufpumpbares Expansionsglied (30) mit einem proximalen Ende (32) und einem distalen Ende (34), wobei das proximale Ende (32) um den Umfang herum mit der Außenwand des ersten Rohrgliedes (12) nahe dem distalen Ende (16) des ersten Rohrgliedes (12) verbunden ist und das distale Ende (34) des Expansionsgliedes (30) um den Umfang herum mit dem distalen Endteil des Rohrgliedes (20) verbunden ist; und(d) ein Verbindungsstück (24), das am proximalen Ende (14, 22) des ersten und zweiten Rohrgliedes (12, 20) befestigt ist, wobei das Verbindungsstück (24) ein Aufpumpanschlußstück (26) in Strömungskommunikation mit einem Ringraum in dem Lumen (18) des das zweite Rohrglied (20) umgebenden ersten Rohrgliedes einschließt,dadurch gekennzeichnet, daß der Ballonkatheter(e) eine Wandstärke im Bereich von 0,025 mm (0,001 Inch) bis 0,150 mm (0,006 Inch) hat und er ferner(f) mindestens einen Verstärkungsdraht (40, 44) aufweist, der in der Wand eines oder beider des ersten Rohrgliedes (12) oder des zweiten Rohrgliedes (20) eingebettet ist und parallel zur Längsache des ersten und zweiten Rohrgliedes (12, 20) verläuft.
- Katheter nach Anspruch 1, bei dem der Kunststoff aus der Gruppe von Polymeren einschießlich Polyamid, Polyimid und Polyester ausgewählt ist.
- Katheter nach Anspruch 1, bei dem der Verstärkungsdraht (40, 44) in einem des ersten und zweiten Rohrgliedes (12, 20) eine Vielzahl radial beabstandeter Drahtstränge (40, 44) umfaßt, die parallel zur Längsachse des ersten und zweiten Rohrgliedes (12, 20) verlaufen.
- Katheter nach irgendeinem der Ansprüche 1 bis 3, bei dem der Außendurchmesser der ersten Rohrgliedes im Bereich von 0,66 bis 1,47 mm (0,26 bis 0,58 Inch) und der Außendurchmesser des zweiten Rohrgliedes (20) im Bereich von 0,45 bis 0,94 mm (0,0177 bis 0,037 Inch) liegen.
- Katheter nach Anspruch 5, bei dem der Verstärkungsdraht (40, 44) ein Draht aus rostfreiem Stahl mit einem Durchmesser von 0,025 mm (0,001 Inch) bis 0,050 mm (0,002 Inch) ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT9090310238T ATE104560T1 (de) | 1989-09-25 | 1990-09-19 | Dilatationskatheter mit geringem durchmesser, ausgestattet mit einem drahtverstaerkten, koaxialen, schlauchfoermigen koerper. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41181589A | 1989-09-25 | 1989-09-25 | |
US411815 | 1999-10-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0420486A1 EP0420486A1 (de) | 1991-04-03 |
EP0420486B1 true EP0420486B1 (de) | 1994-04-20 |
Family
ID=23630439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90310238A Expired - Lifetime EP0420486B1 (de) | 1989-09-25 | 1990-09-19 | Dilatationskatheter mit geringem Durchmesser, ausgestattet mit einem drahtverstärkten, koaxialen, schlauchförmigen Körper |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0420486B1 (de) |
JP (1) | JPH03205062A (de) |
AT (1) | ATE104560T1 (de) |
AU (1) | AU621008B2 (de) |
CA (1) | CA2025961C (de) |
DE (2) | DE69008290T2 (de) |
DK (1) | DK0420486T3 (de) |
ES (1) | ES2050963T3 (de) |
FI (1) | FI904683A0 (de) |
IE (1) | IE64488B1 (de) |
NO (1) | NO178425C (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7654264B2 (en) | 2006-07-18 | 2010-02-02 | Nellcor Puritan Bennett Llc | Medical tube including an inflatable cuff having a notched collar |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5389087A (en) * | 1991-09-19 | 1995-02-14 | Baxter International Inc. | Fully exchangeable over-the-wire catheter with rip seam and gated side port |
US5324269A (en) * | 1991-09-19 | 1994-06-28 | Baxter International Inc. | Fully exchangeable dual lumen over-the-wire dilatation catheter with rip seam |
US5338295A (en) * | 1991-10-15 | 1994-08-16 | Scimed Life Systems, Inc. | Dilatation catheter with polyimide-encased stainless steel braid proximal shaft |
US5533987A (en) * | 1992-04-09 | 1996-07-09 | Scimed Lifesystems, Inc. | Dilatation catheter with polymide encased stainless steel braid proximal shaft |
US5328472A (en) * | 1992-07-27 | 1994-07-12 | Medtronic, Inc. | Catheter with flexible side port entry |
US5456250A (en) * | 1992-10-19 | 1995-10-10 | Xomed-Treace, Inc. | Laser compatible jet ventilation tube |
EP0738169B1 (de) * | 1994-01-06 | 2004-03-17 | SciMed Life Systems, Inc. | Ballonkatheter mit thermoplastischem polyimide-ballon |
US5403292A (en) * | 1994-05-18 | 1995-04-04 | Schneider (Usa) Inc. | Thin wall catheter having enhanced torqueability characteristics |
CA2205666A1 (en) * | 1994-11-23 | 1996-05-30 | Micro Interventional Systems, Inc. | High torque balloon catheter |
US5827242A (en) * | 1996-06-21 | 1998-10-27 | Medtronic, Inc. | Reinforced catheter body and method for its fabrication |
US6110164A (en) * | 1997-12-05 | 2000-08-29 | Intratherapeutics, Inc. | Guideless catheter segment |
US7018372B2 (en) | 2001-04-17 | 2006-03-28 | Salviac Limited | Catheter |
DE10332251A1 (de) * | 2003-07-16 | 2005-02-17 | B. Braun Melsungen Ag | Ballonkatheter |
JP4342971B2 (ja) * | 2004-02-03 | 2009-10-14 | 日本シャーウッド株式会社 | 胃瘻造設に用いる感染防止胃瘻造設カテーテルキット |
US10080865B2 (en) | 2014-01-14 | 2018-09-25 | Cook Medical Technologies Llc | Multi-lumen catheters for small body vessel applications |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT348094B (de) * | 1977-02-17 | 1979-01-25 | Hanecka Lubomir Dipl Ing | Ballonkatheter |
DE2946385A1 (de) * | 1979-11-16 | 1981-05-21 | Siemens AG, 1000 Berlin und 8000 München | Kunststoffschlauch |
JPS5980257A (ja) * | 1982-11-01 | 1984-05-09 | テルモ株式会社 | カテ−テルとその製造方法 |
JPH025799Y2 (de) * | 1986-02-07 | 1990-02-13 | ||
JPS62258675A (ja) * | 1986-05-02 | 1987-11-11 | オリンパス光学工業株式会社 | 生体内插入用長尺物 |
EP0256683A3 (de) * | 1986-08-04 | 1989-08-09 | Aries Medical Incorporated | Mittel zum Aufrollen eines Ballons eines Ballonkatheters |
EP0349640B1 (de) * | 1987-02-27 | 1994-07-13 | Terumo Kabushiki Kaisha | Katheter mit ausdehnbaren elementen und herstellungsverfahren dafür |
JPH01121064A (ja) * | 1987-11-05 | 1989-05-12 | Terumo Corp | カテーテル |
JPH01145074A (ja) * | 1987-12-01 | 1989-06-07 | Terumo Corp | バルーンカテーテル |
-
1990
- 1990-09-19 ES ES90310238T patent/ES2050963T3/es not_active Expired - Lifetime
- 1990-09-19 AT AT9090310238T patent/ATE104560T1/de not_active IP Right Cessation
- 1990-09-19 EP EP90310238A patent/EP0420486B1/de not_active Expired - Lifetime
- 1990-09-19 DK DK90310238.2T patent/DK0420486T3/da active
- 1990-09-19 DE DE69008290T patent/DE69008290T2/de not_active Expired - Fee Related
- 1990-09-20 DE DE9013331U patent/DE9013331U1/de not_active Expired - Lifetime
- 1990-09-21 CA CA002025961A patent/CA2025961C/en not_active Expired - Fee Related
- 1990-09-24 IE IE343290A patent/IE64488B1/en not_active IP Right Cessation
- 1990-09-24 FI FI904683A patent/FI904683A0/fi not_active Application Discontinuation
- 1990-09-24 AU AU63177/90A patent/AU621008B2/en not_active Ceased
- 1990-09-24 NO NO904146A patent/NO178425C/no unknown
- 1990-09-25 JP JP2255026A patent/JPH03205062A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7654264B2 (en) | 2006-07-18 | 2010-02-02 | Nellcor Puritan Bennett Llc | Medical tube including an inflatable cuff having a notched collar |
US8096299B2 (en) | 2006-07-18 | 2012-01-17 | Nellcor Puritan Bennett Llc | Medical tube including an inflatable cuff having a notched collar |
Also Published As
Publication number | Publication date |
---|---|
NO904146D0 (no) | 1990-09-24 |
FI904683A0 (fi) | 1990-09-24 |
NO178425C (no) | 1996-03-27 |
AU6317790A (en) | 1991-03-28 |
ATE104560T1 (de) | 1994-05-15 |
DE69008290D1 (de) | 1994-05-26 |
JPH03205062A (ja) | 1991-09-06 |
DK0420486T3 (da) | 1994-05-24 |
NO904146L (no) | 1991-03-26 |
EP0420486A1 (de) | 1991-04-03 |
CA2025961A1 (en) | 1991-03-26 |
AU621008B2 (en) | 1992-02-27 |
ES2050963T3 (es) | 1994-06-01 |
CA2025961C (en) | 1996-07-30 |
IE64488B1 (en) | 1995-08-09 |
DE9013331U1 (de) | 1990-10-31 |
IE903432A1 (en) | 1991-04-24 |
NO178425B (no) | 1995-12-18 |
DE69008290T2 (de) | 1994-08-04 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19900924 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
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17Q | First examination report despatched |
Effective date: 19921015 |
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GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
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